Road Trip 2015: The second half of a two-part series about Vietnam's startup scene takes a deeper look at some rare success stories and how the country is fostering -- and hindering -- its homegrown tech community.

Across from the Tower of London, up the river from the Tower Bridge, floats the HMS Belfast, the last surviving British WWII warship. As part of our ongoing series of military tours, we take you onboard this historic vessel.